Difference(Sort of a Poem)

There was a man who would go out to a beach to wallk. He was walking along the shore, and he saw a figure up ahead, that seemed to be dancing.
"How nice, someone who would dance to the day." he said to himself. He neared the figure, and upon closer inspection, it was a young boy, and he wasn't dancing, but throwing starfish into the water.
"Why are you throwing them?" the man asked, and the boy simply said that it would be a while till the tide came back up again, and they would die if they sat for that long.
"But there is miles of shore and millions of starfish! You can't possibly make a difference!" the man said and the boy picked up another one and threw it into the water.
"I made a difference for that one."